GET /api/v1/beat/key

Returns the public key used for Beats receipt-signature verification.

Service: Beats (https://beats.provenonce.dev)
Auth: None

curl https://beats.provenonce.dev/api/v1/beat/key

{
  "public_key_base58": "...",
  "public_key_hex": "...",
  "algorithm": "Ed25519",
  "purpose": "Beats response-signing convenience verification"
}

Canonical proof is still the on-chain Solana transaction reference.